PDFs are one of the most popular document formats, mainly because you can view them easily on any device. Sometimes you need to modify them or convert them to other formats depending on your usage.
SmallPDF is a free, online service that gives you the ability to compress, convert, split, merge, modify, (and more) PDF files.
It’s very easy to use. Select the function you want to perform from the home page and then just drag and drop your files. It’s that easy. It supports converting images to PDF and PDF to Office and Office to PDF, along with much more.